Effect of a surface borehole on longwall gob degasification(Pocahontas No. 3 Coalbed)

Author:	Moore, T. D.
Additional Authors:	Zabetakis, Michael George,
Year:	1972
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of Interior, Bureau of Mines,
SUDOC:	I 28.23:7657
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	7657
Subjects:	Mine ventilation
	Methane
	Boring
Link:	https://hdl.handle.net/2027/mdp.39015078520148